#include <iostream>
using namespace std;
int max(int a,int b); //function de shengming,function de yuanxing.don't forget fenhao ';'. 
int main()
{
	int r, s, t;
	cout << "shuru liangge shu: " << endl;
	cin >> r >> s;
	t = max(r,s);//tiaoyong max() .hanshu
	cout << t << endl;
	return 0;
}
int max(int a, int b)//hanshu tou,don't add fenghao ';'.
{   // {} li de shi hanshu ti.
	if (a >= b) return a;
	return b;
}
